// Rollover  v2.0.1
// documentation: http://www.dithered.com/javascript/rollover/index.html
// license: http://creativecommons.org/licenses/by/1.0/
// code by Chris Nott (chris[at]dithered[dot]com)


function isDefined(property) {
  return (typeof property != 'undefined');
}

var rolloverInitialized = false;
function rolloverInit() {
   if (!rolloverInitialized && isDefined(document.images)) {
      
      // get all images (including all <input type="image">s)
      // use getElementsByTagName() if supported
      var images = new Array();
      if (isDefined(document.getElementsByTagName)) {
         images = document.getElementsByTagName('img');
         var inputs = document.getElementsByTagName('input');
         for (var i = 0; i < inputs.length; i++) {
            if (inputs[i].type == 'image') {
               images[images.length] = inputs[i];
            }
         }
      }
      
      // otherwise, use document.images and document.forms collections
      // remove if not supporting IE4, Opera 4-5
      else {
         images = document.images;
         inputs = new Array();
         for (var formIndex = 0; formIndex < document.forms.length; formIndex++) {
            for (var elementIndex = 0; elementIndex < document.forms.elements.length; elementIndex++) {
               if (isDefined(document.forms.elements[i].src)) {
                  inputs[inputs.length] = document.forms.elements[i];
               }
            }
         }
      }
      
      // get all images with '_off.' in src value
      for (var i = 0; i < images.length; i++) {
         if (images[i].src.indexOf('_off.') != -1) {
            var image = images[i];
            
            // store the off state filename in a property of the image object
            image.offImage = new Image();
            image.offImage.src = image.src;
            
            // store the on state filename in a property of the image object
            // (also preloads the on state image)
            image.onImage = new Image();
            image.onImage.imageElement = image;
            
            // add onmouseover and onmouseout event handlers once the on state image has loaded
            // Safari's onload is screwed up for off-screen images; temporary fix
            if (navigator.userAgent.toLowerCase().indexOf('safari') != - 1) {
               image.onmouseover = function() {
                  this.src = this.onImage.src;
               };
               image.onmouseout = function() {
                  this.src = this.offImage.src;
               };
            }
            else {
               image.onImage.onload = function() {
                  this.imageElement.onmouseover = function() {
                     this.src = this.onImage.src;
                  };
                  this.imageElement.onmouseout = function() {
                     this.src = this.offImage.src;
                  };
               };
            }
            
            // set src of on state image after defining onload event handler
            // so cached images (that load instantly in IE) will trigger onload
            image.onImage.src = image.src.replace(/_off\./, '_on.');
         }
      }
   }
   rolloverInitialized = true;
}

// call rolloverInit when document finishes loading
if (isDefined(window.addEventListener)) {
   window.addEventListener('load', rolloverInit, false);
}
else if (isDefined(window.attachEvent)) {
   window.attachEvent('onload', rolloverInit);
}


// Image Preloader  v1.0.1
// documentation: http://www.dithered.com/javascript/image_preloader/index.html
// license: http://creativecommons.org/licenses/by/1.0/
// code by Chris Nott (chris[at]dithered[dot]com)


function preloadImages() {
	if (document.images) {
		for (var i = 0; i < preloadImages.arguments.length; i++) {
			(new Image()).src = preloadImages.arguments[i];
		}
	}
}

function imageSwap(daImage, daSrc){
  var objStr,obj;
  /*
    WM_imageSwap()
    Changes the source of an image.

    Source: Webmonkey Code Library
    (http://www.hotwired.com/webmonkey/javascript/code_library/)

    Author: Shvatz
    Author Email: shvatz@wired.com

    Usage: WM_imageSwap(originalImage, 'newSourceUrl');

    Requires: WM_preloadImages() (optional, but recommended)
    Thanks to Ken Sundermeyer (ksundermeyer@macromedia.com) for his help
    with variables in ie3 for the mac. 
    */

  // Check to make sure that images are supported in the DOM.
  if(document.images){
    // Check to see whether you are using a name, number, or object
    if (typeof(daImage) == 'string') {
      // This whole objStr nonesense is here solely to gain compatability
      // with ie3 for the mac.
      objStr = 'document.' + daImage;
      obj = eval(objStr);
      obj.src = daSrc;
    } else if ((typeof(daImage) == 'object') && daImage && daImage.src) {
      daImage.src = daSrc;
    }
  }

	self.selectedNow = daImage;
}

// function to show & hide content
function hidedivs(id) { 
	if (document.getElementById) { // DOM3 = IE5, NS6 
		document.getElementById(id).style.display = 'none'; 
	} 
} 

function showdivs(id) { 
	if (document.getElementById) { // DOM3 = IE5, NS6 
		document.getElementById(id).style.display = 'block';
	} 
}
// end function to show & hide content

// START: window functions
// Window opener functions  v1.0.6
// documentation: http://www.dithered.com/javascript/window/index.html
// license: http://creativecommons.org/licenses/by/1.0/
// code by Chris Nott (chris[at]dithered[dot]com)


/*******************************************************************************
   Popup Window openers
*******************************************************************************/

var winReference = null;


// Open a window at a given position on the screen
function openPositionedWindow(url, name, width, height, x, y, status, scrollbars, moreProperties, openerName) {
   
   // ie 4.5 and 5.0 mac - windows are 2 pixels too short; if a statusbar is used, the window will be an additional 15 pixels short
   var agent = navigator.userAgent.toLowerCase();
   if (agent.indexOf("mac") != -1 && agent.indexOf("msie") != -1 && (agent.indexOf("msie 4") != -1 || agent.indexOf("msie 5.0") != -1) ) {
      height += (status) ? 17 : 2;
   }

   // Adjust width if scrollbars are used (pc places scrollbars inside the content area; mac outside) 
   width += (scrollbars != '' && scrollbars != null && agent.indexOf("mac") == -1) ? 16 : 0;

   var properties = 'width=' + width + ',height=' + height + ',screenX=' + x + ',screenY=' + y + ',left=' + x + ',top=' + y + ((status) ? ',status' : '') + ',scrollbars' + ((scrollbars) ? '' : '=no') + ((moreProperties) ? ',' + moreProperties : '');
   var reference = openWindow(url, name, properties, openerName);
   
   // resize window in ie if we can resize in ns; very messy
   // commented out because openPositionedWindow() doesn't set the resizable attribute
   // left in for reference
   /*if (resizable && agent.indexOf("msie") != -1) {
      if (agent.indexOf("mac") != -1) {
         height += (status) ? 15 : 2;
         if (parseFloat(navigator.appVersion) > 5) width -= 11;
      }
      else {
         height += (status) ? 49 : 31;
         width += 13;
      }
      setTimeout('if (reference != null && !reference.closed) reference.resizeTo(' + width + ',' + height + ');', 150);
   }*/

   return reference;
}


// Open a window at the center of the screen
function openCenteredWindow(url, name, width, height, status, scrollbars, moreProperties, openerName) {
   var x, y = 0;
   if (screen) {
      x = (screen.availWidth - width) / 2;
      y = (screen.availHeight - height) / 2;
   }
   if (!status) status = '';
   if (!openerName) openerName = '';
   var reference = openPositionedWindow(url, name, width, height, x, y, status, scrollbars, moreProperties, openerName);
   return reference;
}   


// Open a window at the center of the parent window
function openCenteredOnOpenerWindow(url, name, width, height, status, scrollbars, moreProperties, openerName) {
   var centerX = 0;
   var centerY = 0;
   if (window.screenX != null && window.outerWidth) {
      centerX = window.screenX + (window.outerWidth / 2);
      centerY = window.screenY + (window.outerHeight / 2);
   }
   else if (window.screenLeft) {
      if (document.documentElement) {
         centerX = window.screenLeft + (document.documentElement.offsetWidth / 2);
         centerY = window.screenTop + (document.documentElement.offsetHeight / 2);
      }
      else if (document.body && document.body.offsetWidth) {
         centerX = window.screenLeft + (document.body.offsetWidth / 2);
         centerY = window.screenTop + (document.body.offsetHeight / 2);
      }
   }
   
   if (centerX == 0) {
      openCenteredWindow(url, name, width, height, status, scrollbars, moreProperties, openerName);
   }
   var x = parseInt(centerX - (width / 2));
   var y = parseInt(centerY - (height / 2));
   if (!status) status = '';
   if (!openerName) openerName = '';
   var reference = openPositionedWindow(url, name, width, height, x, y, status, scrollbars, moreProperties, openerName);
   return reference;
}   


// Open a full-screen window (different from IE's fullscreen option)
function openMaxedWindow(url, name, scrollbars, openerName) {
   var x, y = 0;
   var width  = 600;
   var height = 800;
   if (screen) {
      if (screen.availLeft) {
         x = screen.availLeft;
         y = screen.availTop;
      }
      width  = screen.availWidth - 6;
      height = screen.availHeight - 29;
   }
   var reference = openPositionedWindow(url, name, width, height, x, y, false, scrollbars, openerName);
   return reference;
}


// Open a full-chrome (all GUI elements) window
// This is like using a target="_blank" in a normal link but allows focussing the window
function openFullChromeWindow(url, name, openerName) {
   return openWindow(url, name, 'directories,location,menubar,resizable,scrollbars,status,toolbar');
}


// Open a sized full-chrome (all GUI elements) window 
function openSizedFullChromeWindow(url, name, width, height, openerName) {
   return openCenteredWindow(url, name, width, height, true, true, 'directories,location,menubar,resizable,toolbar', openerName)
}


// Core utility function that actually creates the window and gives focus to it
function openWindow(url, name, properties, openerName) {

   // ie4.x pc can't give focus to windows containing documents from a different domain
   // in this case, initially load a local interstisial page to allow focussing before loading final url
   var agent = navigator.userAgent.toLowerCase();
   if (agent.indexOf("msie") != -1 && parseInt(navigator.appVersion) == 4 && agent.indexOf("msie 5") == -1 && agent.indexOf("msie5") == -1 && agent.indexOf("win") != -1 && url.indexOf('http://') == 0) {
      winReference = window.open('about:blank', name, properties);
      
      setTimeout('if (winReference && !winReference.closed) winReference.location.replace("' + url + '")', 300);
   }
   else {
      winReference = window.open(url, name, properties);
   }

   // ie doesn't like giving focus immediately (to new window in 4.5 on mac; to existing ones in 5 on pc)
   setTimeout('if (winReference && !winReference.closed) winReference.focus()', 200);
   
   if (openerName) self.name = openerName;
   return winReference;
}


/*******************************************************************************
   Modal Dialog controls
*******************************************************************************/

// Close a dialog
// Call from onunload event handler of any page that can create a dialog
function closeDialog(dialog) {
   if (dialog && dialog.closed != true) dialog.close();
}


// Close parent popup
// Call from onload event handler of any page that could be created from a dialog
function closeParentDialog() {
   if (top.opener && isWindowPopup(top.opener)) {
      root = top.opener.top.opener;
      top.opener.close();
      top.opener = root;
   }
}


// Check if a window is a popup
function isWindowPopup(win) {
   return ((win.opener) ? true : false);
}